package net.lzzy.practices.entities;

import com.fasterxml.jackson.annotation.JsonBackReference;
import lombok.Data;
import lombok.Getter;
import lombok.Setter;

import javax.persistence.*;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

@Getter
@Setter
@Entity
public class Course extends BaseEntity{
    private String name;
    private String description;
    private String cover;
    @Temporal(TemporalType.TIMESTAMP)
    private Date createTime;
    @Temporal(TemporalType.TIMESTAMP)
    private Date updateTime;
    private boolean isOpen;
    @JsonBackReference
    @ManyToOne
    private User teacher;
    @ManyToMany
    private List<User> students=new ArrayList<>();
    @OneToMany(mappedBy = "course")
    private List<Chapter> chapters=new ArrayList<>();
    @OneToMany(mappedBy = "course")
    private List<Applicant> applicants=new ArrayList<>();
    public Course(){
        createTime=new Date();
        updateTime=new Date();
    }
}
